.recommend {
     .content {
        background-color: #fff;
        display: flex;
     }
     .rec-l {
        padding: 20px;
        width: 730px;
     }
     .rec-r {
         flex: 1;
         border: 1px solid #d3d3d3;
         border-width: 0 1px;
     }
}